newegg offers the Jabra Rhythm In-Ear Headphones, model no. 100-55220000-02, for $12.99. Coupon code "0910BTS9" cuts it to $4.99. With free shipping, that's the lowest total price we could find by $2. These waterproof and sweat-resistant headphones feature a frequency response of 18Hz to 21kHz. Deal ends September 16.